I haven't made much progress on Sans since the last ability "reveal", but I gave him another "ability" that should be useful with the whole dying in 1 hit thing.
You can give yourself a shield for the cost of 15 rings, meaning the ring cost in the gif is pretty outdated.

Not related to Sans' progress, but just a simple thing I'm making.
"Broken Knuckles" SRB2 edition.
If you can't make it out, trying to move with the normal moving keys such as forward and back will kill you. You can still jump, glide, and spindash.

for those who still actually follow this thread, this post isn't going to be showing any progress made on Sans, as I haven't made any progress on him thanks to Team Fortress 2, and I'm starting to lose my motivation to work on anything. this is more or less going to be an "update" on him. ok?
good.
anyway, I have no real clue on when I'm going to finish Sans. could be in 2020, or it could be in 2018. I just know it sure as hell ain't gonna be by the end of this year. if I don't finish Sans by the time 2.2 is released(which I feel is most likely going to be the case, especially with how lazy I am), then he'll be a release for 2.2. if I manage to get Sans done shortly before 2.2 is released, he'll be for 2.1 and 2.2.
that's pretty much all I wanted to say about this.
sorry for wasting your time.